package daima;
import java.util.Scanner;

class MyClassTest {
    public static void main(String[] args)
    {
      Scanner myObj=new Scanner(System.in);
      System.out.println("输入用户名！");
String userName=myObj.nextLine();
System.out.println("用户名:"+userName);
    }
}//输入用户名！
//12345
//用户名：12345